t_errhandling.c revision 1.3 
1/*	$NetBSD: t_errhandling.c,v 1.3 2024/09/10 17:36:12 riastradh Exp $	*/
2
3/*-
4 * Copyright (c) 2024 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#define	__TEST_FENV
30
31#include <sys/cdefs.h>
32__RCSID("$NetBSD: t_errhandling.c,v 1.3 2024/09/10 17:36:12 riastradh Exp $");
33
34#include <atf-c.h>
35#include <errno.h>
36#include <fenv.h>
37#include <math.h>
38
39ATF_TC(log);
40ATF_TC_HEAD(log, tc)
41{
42	atf_tc_set_md_var(tc, "descr", "log of invalid");
43}
44ATF_TC_BODY(log, tc)
45{
46	static const struct {
47#ifdef __HAVE_FENV
48		double x;
49		int e;
50#define	C(x, e)		{ x, e }
51#else
52		double x;
53#define	C(x, e)		{ x }
54#endif
55	} cases[] = {
56		C(0, FE_DIVBYZERO),
57		C(-0., FE_DIVBYZERO),
58		C(-1, FE_INVALID),
59		C(-HUGE_VAL, FE_INVALID),
60	};
61	volatile double y;
62#ifdef __HAVE_FENV
63	int except;
64#endif
65	unsigned i;
66
67	for (i = 0; i < __arraycount(cases); i++) {
68		const volatile double x = cases[i].x;
69
70#ifdef __HAVE_FENV
71		feclearexcept(FE_ALL_EXCEPT);
72#endif
73		errno = 0;
74		y = log(x);
75		if (math_errhandling & MATH_ERREXCEPT) {
76#ifdef __HAVE_FENV
77			ATF_CHECK_MSG(((except = fetestexcept(FE_ALL_EXCEPT)) &
78				cases[i].e) != 0,
79			    "expected=0x%x actual=0x%x", cases[i].e, except);
80#else
81			atf_tc_fail_nonfatal("MATH_ERREXCEPT but no fenv.h");
82#endif
83		}
84		if (math_errhandling & MATH_ERRNO)
85			ATF_CHECK_EQ_MSG(errno, EDOM, "errno=%d", errno);
86	}
87
88	__USE(y);
89}
90
91ATF_TP_ADD_TCS(tp)
92{
93
94	ATF_TP_ADD_TC(tp, log);
95
96	return atf_no_error();
97}
98